When to use :: When to use -> My understanding is that private or protected calls use :: and public ones use ->, but I found that calling public methods when generating instances of a class also uses ::call? Not really understand

Class attributes and method calls-PHP Chinese Network Q&A

When to use :: When to use -> My understanding is that private or protected calls use:: and public public uses ->, but I found that calling public methods when generating instances of a class also uses of::call? Not really understand